I watched the same interview and he also mentioned that every play should be exciting, and the extra point kick is not. He also said that 6 out of 1,200 extra points this regular season missed. Not sure if that is accurate, just regurgitating what Goodell said.

How many games are decided by an extra point? Say the score is 20-14 so a TD and extra point wins. The defense fights their ass off trying to keep them out of the end zone. In this case the extra point puts a stamp on the winning drive.